title: All-optical logic gates based on two-dimensional low-refractive-index nonlinear photonic crystal slabs.
abstract: This article demonstrates theoretical design of ultracompact all-optical AND, NAND, OR, and NOR gates with two-dimensional nonlinear photonic crystal slabs. Compound Ag-polymer film with a low refractive index and large third-order nonlinearity is adopted as our nonlinear material and photonic crystal cavities with a relatively high quality factor of about 2000 is designed on this polymer slab. Numerical simulations show that all-optical logic gates with low pump-power in the order of tens of MW/cm2 can be achieved. These design results may provide very useful schemes and approaches for the realization of all-optical logic gates with low-cost, low-pump-power, high-contrast and ultrafast response-time.
authors.affiliation: Laboratory of optical physics, National Laboratory for condensed Mater Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Liu
authors.forename: Fei
authors.initials: F
authors.lastname: Qin
authors.forename: Zi-Ming
authors.initials: ZM
authors.lastname: Meng
authors.forename: Fei
authors.initials: F
authors.lastname: Zhou
authors.forename: Qing-He
authors.initials: QH
authors.lastname: Mao
authors.forename: Zhi-Yuan
authors.initials: ZY
authors.lastname: Li
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*